Web Content Accessibility Guidelines (WCAG) 2.1 covers a wide range of recommendations for making Web content more accessible.
Following these guidelines will make content more accessible to a wider range of people with disabilities, including accommodations for blindness and low vision, deafness and hearing loss, limited movement, speech disabilities, photosensitivity, and combinations of these, and some accommodation for learning disabilities and cognitive limitations. These guidelines address accessibility of web content on desktops, laptops, tablets, and mobile devices.
Available in PDF format in Bulgarian and is used together with BDS EN 301 549 V2.1.2:2018 Accessibility requirements for ICT products and services
Accessibility requirements for ICT products and services
Web content accessibility guidelines (WCAG) 2.1 W3C Recommendation 05 June 2018